Threatened, Endangered, and Proposed (TEP) Plant Profile
Cirsium loncholepis. Photo by Ann Howald, courtesy of California Native Plant Society.
Cirsium loncholepis. Photo by Ann Howald, courtesy of California Native Plant Society.
Cirsium loncholepis. Photo by Lloyd Simpson, Los Padres National Forest.
Cirsium loncholepis habitat. Photo courtesy of California Native Plant Society.
Cirsium loncholepis range map.
Cirsium loncholepis, La Graciosa thistle
ESA Status
Visit the U.S. Fish & Wildlife Service Species Profile link below for links to listing and other USFWS documents.
Threats \1
- Habitat destruction and degradation due to development, conversion to agriculture, and flooding
- Groundwater pumping
- Oilfield development
- Competition from non-native plants
- Invasion of its altered habitats by willows
Conservation Status
National Forest and Grassland Occurrence
More Information
- U.S. Fish & Wildlife Service Species Profile
- PLANTS Profile - Cirsium loncholepis, La Graciosa thistle
1/ In addition to the threats of development and motor vehicles, the U.S. Fish & Wildlife Service (USFWS)(1995) lists groundwater pumping as a threat. Skinner and Pavlik (1997) say grazing is a threat, but USFWS (1995) indicated that grazing in the riparian habitat may reduce the competition from other species (this species is spiny and may not be grazed). Oil production is also considered a threat by the California Natural Diversity Database and USFWS (1995). In 2001 the California Native Plant Society indicate that developments, vehicles, groundwater pumping, non-native plants and possibly grazing (CNPS 2001). In addition to the threats of development and motor vehicles, USFWS (1995) lists groundwater pumping as a threat. Skinner and Pavlik (1997) say grazing is a threat, but USFWS (1995) indicated that grazing in the riparian habitat may reduce the competition from other species (this species is spiny and may not be grazed). Oil production is also considered a threat by the California Natural Diversity Database and USFWS (1995). In 2001 the California Native Plant Society indicate that developments, vehicles, groundwater pumping, non-native plants and possibly grazing (CNPS 2001). In addition to the threats of development and motor vehicles, USFWS (1995) lists groundwater pumping as a threat. Skinner and Pavlik (1997) say grazing is a threat, but USFWS (1995) indicated that grazing in the riparian habitat may reduce the competition from other species (this species is spiny and may not be grazed). Oil production is also considered a threat by the California Natural Diversity Database and USFWS (1995). In 2001 the California Native Plant Society indicate that developments, vehicles, groundwater pumping, non-native plants and possibly grazing (CNPS 2001).